Top definition
Horrendously nasty halitosis inherited as part of your genetic makeup. When your breath is so bad that it reminds you of your dad and your kids of their grandpa. Often worsened by the effects of alcohol, coffee, cigarettes, cigars, and / or dehydration - all of which you likely came by because of your father.
Holy smokes, Jeffrey, you've got some dad breath going there; please have some gum.
by Marcos 571 July 09, 2010
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